<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Styled To-Do List</title>
    <link rel="stylesheet" href="styles.css" />
</head>

<body>
    <div class="container">
        <h1>My To-Do List</h1>
        <ul class="todo-list">
            <li>
                <input type="checkbox" id="task1" />
                <label for="task1">Explore gaming keyboards</label>
                <ul class="sub-item">
                    <li>
                        <a href="#" target="_blank" class="sub-item-link">Store link</a>
                    </li>
                </ul>
            </li>

            <li>
                <input type="checkbox" id="task2" />
                <label for="task2">Finish the report</label>
                <ul class="sub-item">
                    <li>
                        <a href="#" target="_blank" class="sub-item-link">Request Access</a>
                    </li>
                </ul>
            </li>

            <li>
                <input type="checkbox" id="task3" />
                <label for="task3">View Phone's Warranty</label>
                <ul class="sub-item">
                    <li>
                        <a href="#" target="_blank" class="sub-item-link">View Receipts</a>
                    </li>
                </ul>
            </li>

            <li>
                <input type="checkbox" id="task4" />
                <label for="task4">Check Processor Specs</label>
                <ul class="sub-item">
                    <li>
                        <a href="#" target="_blank" class="sub-item-link">View Model Number</a>
                    </li>
                </ul>
            </li>
        </ul>
    </div>
</body>

</html>